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Amazon DSA Interview Questions

Cracking the Amazon technical interview requires a specialized strategic approach. This fully optimized Amazon DSA interview preparation sheet provides freshers, SDE-1, SDE-2, and AWS aspirants with 66 highly recurring coding questions collected from recent Online Assessments (OA) and virtual onsite loops. Amazon interviews focus extensively on resource optimization, stream processing, and custom design APIs—making patterns like Heaps (Priority Queues), Hash Tables, Two Pointers, and Dynamic Programming incredibly critical. Utilize this real-world dataset, complete with verified LeetCode and GeeksforGeeks links, to boost your platform's user retention and help candidates land their dream SDE role.

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1. Two Sum
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2. Longest Substring Without Repeating Characters
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3. LRU Cache
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4. Number of Islands
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5. Merge k Sorted Lists
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6. Trapping Rain Water
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7. Reorder Data in Log Files
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8. Top K Frequent Words
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9. K Closest Points to Origin
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10. Subarray Sum Equals K
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11. Best Time to Buy and Sell Stock
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12. Valid Parentheses
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13. Merge Two Sorted Lists
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14. Search in Rotated Sorted Array
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15. Container With Most Water
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16. Product of Array Except Self
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17. Group Anagrams
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18. 3Sum
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19. Spiral Matrix
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20. Word Search
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21. Merge Intervals
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22. Copy List with Random Pointer
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23. Rotting Oranges
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24. Coin Change
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25. Find Median from Data Stream
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26. Meeting Rooms II
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27. Word Ladder
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28. Lowest Common Ancestor of a Binary Tree
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29. Binary Tree Level Order Traversal
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30. Word Break
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31. Decode String
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32. Analyze User Website Visit Pattern
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33. Critical Connections in a Network
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34. Most Common Word
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35. Cut Off Trees for Golf Event
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36. Integer to English Words
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37. Sliding Window Maximum
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38. Min Stack
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39. Longest Palindromic Substring
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40. Boundary of Binary Tree
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41. Longest Consecutive Sequence
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42. Partition Labels
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43. Course Schedule II
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44. Diameter of Binary Tree
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45. Linked List Cycle
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46. Top K Frequent Elements
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47. Search Suggestions System
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48. Subsets
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49. Permutations
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50. Decode Ways
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51. House Robber
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52. Implement Trie (Prefix Tree)
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53. Reverse Linked List
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54. Flood Fill
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55. Binary Tree Maximum Path Sum
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56. Asteroid Collision
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57. Robot Bounded In Circle
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58. Sell Diminishing-Valued Colored Balls
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59. Maximum Bounding Box Area
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60. Find Median from Data Stream
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61. Maximum Profit in Job Scheduling
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62. Minimum Window Substring
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63. Median of Two Sorted Arrays
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64. Connecting Cities With Minimum Cost
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65. Valid Palindrome II
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66. Pac-Man Grid Path Finding
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